System Specification
                            
                            
                        
                            
                                Device Selection
                            
                            
                        
                            
                                Early System and Board Planning
                            
                            
                        
                            
                                Pin Connection Considerations for Board Design
                            
                            
                        
                            
                                I/O and Clock Planning
                            
                            
                        
                            
                                Design Entry
                            
                            
                        
                            
                                Design Implementation, Analysis, Optimization, and Verification
                            
                            
                        
                            
                            
                                Design Checklist
                            
                        
                            
                                Appendix: Cyclone® 10 GX Transceiver Design Guidelines
                            
                            
                        
                            
                            
                                Conclusion
                            
                        
                            
                            
                                Document Revision History
                            
                        
                    
                Fractional PLL (fPLL)
 A fractional PLL (fPLL) is an alternate transmit PLL used for generating low clock frequencies for low data rate applications. fPLLs support both integer frequency synthesis and fine resolution fractional frequency synthesis. Unlike the ATX PLL, the fPLL can be used to synthesize frequencies that can drive the core through the FPGA fabric clock networks. 
  
 
   
 
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